I just picked up a 2002 GL1800A and noticed that my clock and odometer keep resetting to default. I have not found any clear guidance or instructions on how to resolve this issue. I am assuming it has something to do with a wire providing trickle power when the ignition is off but not sure how to find and trace it. Does anyone have a fix and if so please provide so I can resolve this annoying issue?

By default I mean after the ignition is off and it sits for a period of time the clock time is off like it went back to 12:00, memory buttons for ride preload are lost and trip odometer are reset to zero.

I had read that there may be a loose trickle/backup power wire that is not feeding those accessories when shut off but at a loss in finding it. I checked every fuse and all appear to be good. Nothing happens while riding only after it is shut off and sits for maybe an hour or more, not really sure on time period.

BACK-UP POWER LINE
Measure the voltage between the Red/yellow
wire terminal (+) of combination meter connector A
(gray) and ground (–).
There should be battery voltage at all times.
If there is no voltage, check for:
– open circuit in the Red/yellow wire between the
combination meter and fuse box (No. 31 fuse)
– blown No. 31 fuse
– loose or poor contact of related connectors

Sorry for such a delay in the response to this post. I never did get around to nailing down the exact cause for this to happen but do have an idea on what may have caused it. Not having the tools, gadgets or time to conduct the necessary tests I hooked my trickle charger up every night and got some good rides in. I firmly believe that the battery is fairly old (not sure on age because I bought used within the last few months) and the charge level was low enough to cause the memory to dump. At one point in time the bike did not start because it was drained enough. I plan on buying a new battery in the very near future to prevent any unplanned events from happening. I will still need to check the alternator output to ensure that correct voltage is put out. To date I have not had any other memory loses or not starting mornings!